Home / 886,284.63-1,329,148.09-287,106.78

Finding the Fourth Proportional to 886,284.63, 1,329,148.09 and 287,106.78

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Solution

The fourth proportional to 886,284.63, 1,329,148.09 and 287,106.78 is: 430,569.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,284.63 : 1,329,148.09 = 287,106.78 : x
  2. Step 2: Convert to fraction form
    886,284.63/1,329,148.09 = 287,106.78/x
  3. Step 3: Cross multiply
    886,284.63x = 1,329,148.09 × 287,106.78
  4. Step 4: Simplify right side
    886,284.63x = 381,607,428,263.05
  5. Step 5: Solve for x
    x = 381,607,428,263.05/886,284.63
  6. Step 6: Final answer
    x = 430,569.84

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.